Many people enjoy using realistic dildos for strap-on sex because it looks just like the real thing. As long as the dildo you choose features a wide base, you'll be able to use it with a compatible dildo harness.

Strap-on harnesses feature an O-ring which slips over the length of the dildo to secure it in place. It's important to choose a harness with the right size O-ring to ensure a good fit.